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Finding the Third Proportional to 132,198.75 and 290,641.50

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Solution

The third proportional to 132,198.75 and 290,641.50 is: 638,980.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,198.75 : 290,641.50 = 290,641.50 : x
  2. Step 2: Convert to fraction form
    132,198.75/290,641.50 = 290,641.50/x
  3. Step 3: Cross multiply
    132,198.75x = 290,641.50 × 290,641.50
  4. Step 4: Simplify right side
    132,198.75x = 84,472,481,522.25
  5. Step 5: Solve for x
    x = 84,472,481,522.25/132,198.75
  6. Step 6: Final answer
    x = 638,980.94

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.